I have a 2008 Highlander Limited and carry a power chair on the back. This causes the backend to sag. What is the best way to prevent this; heavy duty springs or something else?
The power chair is on an electric lift connected to a 2" hitch with a swing away bar. The
combined weight is over 600 lbs sticking out the back of the vehicle. This causes a
noticeable difference in steering and handling. I'm surprised that the load capacity seems
so impacted by this setup. The rear end rides very low.
I have asked the Toyota service dept if they can add heavier duty shocks to my car but
they do not have any rated for the Highlander. I didn't think of springs and they didn't
mention that as an option either. Do you think that will help resolve this issue?
You can try "Add a Leaf" see if they make something for your rig, or look into adding load bearing air bags to the rear, that way to can keep your stock ride normally and then add air when you increase the load.
Rear air leveling shocks or Firestone (add-on) air bags. With a external air valve & hose connection mounted somewhere (wheel well?) you can adjust the height any time you want, because pumping them up it will make it ride fermer & stiffer. I used Firestone air bags on this Chevy pickup when I carried a heavy load like a big roll away Craftsman tool box for my job.
I actually found Coil SumoSprings Custom Helper Springs for Coil Spring Suspension - Rear Axle and they did the trick. Much better handling and the vehicle is not so low in the rear when loaded. Very easy install, too! Thanks for the responses.
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